Autolite Xtreme Sport High-Performance Car Spark Plugs

Top brands like NGK, DENSO, Autolite, and Champion help maximize your engine’s power and performance. We carry thousands of automotive spark plugs for everything from a Chevy to a Ford or a Volkswagen to a Toyota, all backed by our 100% fitment guarantee. Browse popular series, including NGK Iridium, NGK Racing, and NGK G-Power, to find the perfect replacement spark plugs for your vehicle.

NGK spark plugs and DENSO spark plugs, plus those from Autolite, Bosch, and Champion, help maximize engine power and operating performance ride after ride. We carry thousands of spark plugs for everything from Chevy to Ford, Volkswagen to Toyota, all with a 100% fitment guarantee. Browse popular spark plugs including NGK Iridium, NGK Racing, NGK G-Power, and many more replacement spark plugs. Ensure they’re well protected in the Cylinder Head and properly connected via the Coil Boots when replacing them.

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  1. Autolite Spark Plug
    6 pc Autolite Xtreme Sport XS4163DP Spark Plugs
    Special Price $33.80 Regular Price $47.99
    Out of stock
  2. Autolite Spark Plug
    Autolite Xtreme Sport XS4092DP Spark Plug
    Special Price $6.21 Regular Price $8.99
  3. Autolite Spark Plug
    Autolite Xtreme Sport XS4163DP Spark Plug
    Special Price $6.36 Regular Price $8.99
    Out of stock
  4. Autolite Spark Plug
    Autolite Xtreme Sport XS61 Spark Plug
    Special Price $6.36 Regular Price $8.99
  5. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XS4163DP Spark Plugs
    Special Price $23.29 Regular Price $32.99
    Out of stock
  6. Autolite Spark Plug
    Autolite Xtreme Sport XST4265DP Spark Plug
    Special Price $4.49 Regular Price $5.99
  7. Autolite Spark Plug
    Autolite Xtreme Sport XST3924DP Spark Plug
    Special Price $4.49 Regular Price $5.99
  8. Autolite Spark Plug
    Autolite Xtreme Sport XS4163 Spark Plug
    Special Price $6.36 Regular Price $8.99
  9. Autolite Spark Plug
    Autolite Xtreme Sport XS4303 Spark Plug
    Special Price $6.49 Regular Price $8.99
    Out of stock
  10. Autolite Spark Plug
    Autolite Xtreme Sport XST2954DP Spark Plug
    Special Price $9.22 Regular Price $12.99
  11. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XS4302 Spark Plug
    Special Price $23.29 Regular Price $32.99
  12. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XS85 Spark Plugs
    Special Price $23.29 Regular Price $32.99
    Out of stock
  13. Autolite Spark Plug
    Autolite Xtreme Sport XST255DP Spark Plug
    Special Price $4.49 Regular Price $5.99
  14. Autolite Spark Plug
    Autolite Xtreme Sport XST3926DP Spark Plug
    Special Price $4.49 Regular Price $5.99
    Out of stock
  15. Autolite Spark Plug
    Autolite Xtreme Sport XST254DP Spark Plug
    Special Price $4.49 Regular Price $5.99
  16. Autolite Spark Plug
    Autolite Xtreme Sport XST2976DP Spark Plug
    Special Price $4.49 Regular Price $5.99
  17. Autolite Spark Plug
    Autolite Xtreme Sport XST458DP Spark Plug
    Special Price $4.59 Regular Price $6.99
  18. Autolite Spark Plug
    Autolite Xtreme Sport XST2974DP Spark Plug
    Special Price $4.59 Regular Price $6.99
    Out of stock
  19. Autolite Spark Plug
    Autolite Xtreme Sport XS5224 Spark Plug
    Special Price $6.36 Regular Price $8.99
  20. Autolite Spark Plug
    Autolite Xtreme Sport XS4162 Spark Plug
    Special Price $6.36 Regular Price $8.99
  21. Autolite Spark Plug
    Autolite Xtreme Sport XS4063DP Spark Plug
    Special Price $6.36 Regular Price $8.99
  22. Autolite Spark Plug
    Autolite Xtreme Sport XS4164DP Spark Plug
    Special Price $6.36 Regular Price $8.99
  23. Autolite Spark Plug
    Autolite Xtreme Sport XS65DP Spark Plug
    Special Price $6.36 Regular Price $8.99
  24. Autolite Spark Plug
    Autolite Xtreme Sport XS4063 Spark Plug
    Special Price $6.36 Regular Price $8.99
    Out of stock
  25. Autolite Spark Plug
    Autolite Xtreme Sport XS4164 Spark Plug
    Special Price $6.49 Regular Price $8.99
    Out of stock
  26. Autolite Spark Plug
    Autolite Xtreme Sport XS4303DP Spark Plug
    Special Price $6.49 Regular Price $8.99
  27. Autolite Spark Plug
    Autolite Xtreme Sport XS4062 Spark Plug
    Special Price $6.49 Regular Price $8.99
  28. Autolite Spark Plug
    Autolite Xtreme Sport XS85DP Spark Plug
    Special Price $6.49 Regular Price $8.99
  29. Autolite Spark Plug
    Autolite Xtreme Sport XS65 Spark Plug
    Special Price $6.49 Regular Price $8.99
  30. Autolite Spark Plug
    Autolite Xtreme Sport XS62 Spark Plug
    Special Price $6.49 Regular Price $8.99
  31. Autolite Spark Plug
    Autolite Xtreme Sport XS4092 Spark Plug
    Special Price $6.49 Regular Price $8.99
  32. Autolite Spark Plug
    Autolite Xtreme Sport XS4302 Spark Plug
    Special Price $6.49 Regular Price $8.99
  33. Autolite Spark Plug
    Autolite Xtreme Sport XS85 Spark Plug
    Special Price $6.49 Regular Price $8.99
    Out of stock
  34. Autolite Spark Plug
    Autolite Xtreme Sport XST2956DP Spark Plug
    Special Price $9.22 Regular Price $12.99
  35. Autolite Spark Plug
    Autolite Xtreme Sport XST258DP Spark Plug
    Special Price $9.22 Regular Price $12.99
  36. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST255DP Spark Plugs
    Special Price $15.36 Regular Price $21.99
  37. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST3924DP Spark Plugs
    Special Price $15.36 Regular Price $21.99
    Out of stock
  38. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST458DP Spark Plugs
    Special Price $15.36 Regular Price $21.99
    Out of stock
  39. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST2976DP Spark Plugs
    Special Price $15.68 Regular Price $21.99
    Out of stock
  40. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST4265DP Spark Plugs
    Special Price $15.68 Regular Price $21.99
    Out of stock
  41. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST2974DP Spark Plugs
    Special Price $15.68 Regular Price $21.99
    Out of stock
  42. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST254DP Spark Plugs
    Special Price $15.68 Regular Price $21.99
    Out of stock
  43. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XST3926DP Spark Plugs
    Special Price $15.68 Regular Price $21.99
    Out of stock
  44. Autolite Spark Plug
    4 pc Autolite Xtreme Sport XS4092DP Spark Plugs
    Special Price $22.17 Regular Price $31.99
    Out of stock
  45. Autolite Spark Plug
    6 pc Autolite Xtreme Sport XST254DP Spark Plugs
    Special Price $22.61 Regular Price $31.99
    Out of stock
  46. Autolite Spark Plug
    6 pc Autolite Xtreme Sport XST3924DP Spark Plugs
    Special Price $22.61 Regular Price $31.99
    Out of stock
  47. Autolite Spark Plug
    6 pc Autolite Xtreme Sport XST458DP Spark Plugs
    Special Price $22.61 Regular Price $31.99
    Out of stock
  48. Autolite Spark Plug
    6 pc Autolite Xtreme Sport XST2976DP Spark Plugs
    Special Price $22.61 Regular Price $31.99
    Out of stock
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The Sixity Auto Advantage

Finding the right car spark plugs can seem complicated, but our goal is to make it simple. We combine a massive selection of parts from trusted brands with the expert, US-based support you need to make the right choice. With fast shipping and a 100% fitment guarantee, we provide a hassle-free shopping experience that has earned the trust of over a million customers.

Platinum, Iridium, and More

Choosing the right material is key to your engine’s performance and longevity. We carry a massive selection of aftermarket spark plugs in every type, from long-lasting iridium to dependable copper plugs for classic vehicles. Whatever your engine needs, we have the right plug to match its specific requirements, ensuring optimal spark and efficiency.

Expert Support When You Need It

Not sure which plug is right for your vehicle? Our friendly, US-based customer support team is here to help. With deep knowledge of our full catalog, they can guide you to the perfect car spark plugs for your specific make and model. We are committed to helping you buy with confidence and getting your installation done right the first time.

Frequently Asked Questions

Got a question about our automotive spark plugs? Here are a few things people often ask. For anything else, our main FAQ page has you covered.

How do I find the right spark plugs for my car?

Your best bet is our vehicle selector tool. Just plug in your car’s info, and we’ll show you exactly which plugs are guaranteed to work.

Are your aftermarket spark plugs as good as the originals?

Definitely. We only carry parts that are as good or better than the ones that came in your car, but without those dealership prices.

How often should I replace car spark plugs?

That really depends on the type. A standard copper plug is usually good for about 20,000 miles, while a high-end iridium one can last 100,000. Your owner’s manual will have the exact schedule for your engine.

Spark Plug Features

  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum
  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum

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